Clutch.



No. 780,156. PATENTED JAN. 17, 1905. G. BURR.

CLUTCH.

APPLICATION FILED JULY 1, 190% @i ii 6 X W W Patented January 1'7, 1905.

PATENT OFFICE.

GUSTAV BURR, OF CHICAGO, ILLINOIS.

CLUTCH.

SPECIFICATION forming part of Letters Patent No. 780,156, dated January1'7, 1905. Application filed July 1, 1904. Serial No. 214,963.

To all whom it may concern:

Be it known that I, GUSTAV BURR, a citizen of the United States,residing at Chicago, in the county of Cook and State of Illinois, haveinvented new and useful Improvements in Clutches, of which the followingis a specification.

This invention is a friction-clutch, and par ticularly a band-clutch,suitable for coupling fast and loose pulleys on the same or difierentshafts, and it embodies a novel construction suitable for line or othershafts of high or low speed. The arrangement is such that the parts maybe adjusted or applied to pulleys of various sizes, and it has veryquick action and large friction-surface.

In the accompanying drawings, Figure 1 is a sectional elevation of thedevice. Fig. 2 is an end elevation showing the same. Fig. 3 is a detailof the band. Fig. 4 is a detail in perspective of a sliding collar.detail in perspective of the sleeve on which the collar slides and onwhich the driven or loose pulley is mounted. Figs. 6 and 7 are detailsin plan and end views of a casting which is carried by the loose pulley.

Referring specifically to the drawings, P indicates the line ordriving-shaft, carrying thereon the fast pulley H, from which motion iscommunicated to the loose or driven pulley K. This pulley K is fast upona sleeve A, which is loose on the shaft.

I indicates a band which extends around the rim of the pulley H and isfaced on the inside with wooden blocks M. At its ends the band isconnected to opposite arms cl, projecting from a rocker D, which iscarried in bearings on the plate C, bolted to the spoke or arm of thepulley K, which is preferably of the wood split kind. The connectionbetween one end of the band I and one of the arms d is by means of abolt J, the head of which is forked for pivotal connection with the arm(Z and the stem of which extends through an end piece a on the band andis threaded to receive adjusting-nuts j, whereby the band may beproperly adjusted to the pulley H to take up wear or otherwise. Therocker D extends across the pulley K parallel to the axis of the mainshaft, and the casting C, by which it is carried, may be adjusted orbolted at any Fig. 5 is a I place on the frame or spoke of the pulley atvarious distances from the shaft, so as to per mit of its use withvarious sizes of pulleys, either fast or loose. The rocker D is turnedby a crank-arm E and a piece F and a link G, which is pivotallyconnected to a collar B, which is slidable lengthwise on the sleeve A,relative rotary movement being prevented by a long key L between thetwo.

The hand-lever to operate the clutch is indicated at Q. It is bowed tospan the shaft and is connected by links q to a ring R, litting looselyin a groove Z) in the piece B.

In operation to throw the clutch in gear the collar B is forced towardthe pulleys. This turns the rocker D, and the arms (Z pull the oppositeends of the band and tighten the same against the fast pulley H, whichby the connection thus established carries with it the loose pulley K,the sleeve A turning on the shaft P. The disconnection is effected byopposite movement in an obvious manner.

This clutch can be used to couple two pulleys on the same shaft or ontwo shafts lined up endwise to each other. The collar B can be made inhalf-sections, so that the clutch can be put on the shaft without takingdown the same or removing the pulleys. The parts are few and simple, andinasmuch as the location of the casting C is optional at greater or lessdistance from the main shaft the device can be constructed and appliedto pulleys of various sizes.

What I claim as new, and desire to secure by Letters Patent, is

The combination with a driving and a driven pulley arranged in axialalinement, of a rocker carried by the latter and extending across thesame parallel to its axis, and adjustable radially with respect thereto,said rocker having on one end oppositely-extending arms over thedriving-pulley, a band connected at its ends to said arms and extendingaround said driving-pulley, and means to turn the rocker.

In testimony whereof I have signed my name to this specification in thepresence of two subscribing witnesses.

GUSTAV BURR. Witnesses:

ELSA Peosonn, H. G. BATCHELOR.

